1 to 25 of 34 Contract LLM Jobs in London

Key Responsibilities Design, build, and deploy Python-based AI and ML applications . Research and develop new Generative AI techniques, including fine-tuning and prompt engineering. Develop and maintain LLM-assisted frameworks and automation pipelines. Write clean, maintainable, and well-documented code for scalable deployment. Build and implement testing and evaluation frameworks for AI models. Collaborate with data scientists, software More ❯

Deployment: Design, prototype, and deploy state-of-the-art Generative AI models (e.g., LLMs, Transformers, Diffusion models ) tailored for enterprise use cases. Application Development: Build, fine-tune, and deploy LLM-based applications such as advanced chatbots, summarization tools, document Q&A systems, and code assistants. Advanced Techniques: Apply sophisticated techniques like Prompt Engineering , Retrieval-Augmented Generation (RAG) , and context-aware More ❯

Deployment: Design, prototype, and deploy state-of-the-art Generative AI models (e.g., LLMs, Transformers, Diffusion models ) tailored for enterprise use cases. Application Development: Build, fine-tune, and deploy LLM-based applications such as advanced chatbots, summarization tools, document Q&A systems, and code assistants. Advanced Techniques: Apply sophisticated techniques like Prompt Engineering , Retrieval-Augmented Generation (RAG) , and context-aware More ❯

collaboratively with the team to ensure project deadlines are met. Design, prototype, and deploy Generative AI models (LLMs, Transformers, Diffusion models) for enterprise use cases. Build and fine-tune LLM-based applications (chatbots, summarization, document Q&A, report generation, code assistants, etc.). Apply prompt engineering, RAG (Retrieval-Augmented Generation), and context-aware pipelines to ensure accuracy and relevance. Integrate More ❯

impact solutions Job Responsibilities/Objectives Build and deploy Python based AI applications Research and design advanced experiments and prototypes using cutting edge techniques, specifically in GenAI Develop various LLM assisted frameworks Design and write clean, maintainable, auditable and well documented codebases Implement testing pipelines and evaluation frameworks Good documentation practices to ensure seamless operations Exceptional teamwork and communication skills More ❯

or engineering tools environments A commitment to clean code, testing, and continuous delivery Confident communication skills and a proactive, ownership-driven mindset Bonus Points For: Exposure to GenAI/LLM integrations such as OpenAI or Anthropic Experience with SDLC tooling such as Jenkins, GitHub Actions, Jira Familiarity with AI-powered developer workflows What Success Looks Like: A smooth, modern UI More ❯

Technically sharp AI Prompt Engineer Youll design and optimize prompts, build LLM-powered applications, and deploy scalable GenAI solutions that connect people and intelligent systems in new ways. ?? What Youll Do Design, test, and refine prompts for leading LLMs (GPT-4/5, Claude, Gemini, Mistral, LLaMA, Cohere). Experiment with advanced prompting techniques; Chain-of-Thought, ReAct, Tree-of … speed up iteration. Apply MLOps/LLMOps practices with MLflow, Weights & Biases, and Kubeflow. ?? Youll Bring Strong Python skills and experience with LangChain, Transformers, Hugging Face. Solid grasp of LLM behavior, prompt optimization, and data engineering. Familiarity with vector databases (FAISS, Pinecone, ChromaDB). Hands-on with Linux, Bash/Powershell scripting, cloud environments. Creative problem-solver with excellent communication More ❯

Technically sharp AI Prompt Engineer Youll design and optimize prompts, build LLM-powered applications, and deploy scalable GenAI solutions that connect people and intelligent systems in new ways. What Youll Do Design, test, and refine prompts for leading LLMs (GPT-4/5, Claude, Gemini, Mistral, LLaMA, Cohere) click apply for full job details More ❯

AI Prompt Engineer Location: UK Rate: £400.00 Outside IR35 We are seeking a dedicated and technically proficient AI Prompt Engineer to spearhead the development and optimisation of prompts for advanced platforms such as DealCloud, Filament Sifter, and Capsa. The ideal More ❯

finance services business builds, deploys, and adopts AI across the business. Expect hands-on engineering, real problem solving, and plenty of collaboration as you help architect, automate, and operationalise LLM-driven services at scale. What You’ll Be Doing: Building backend services and APIs that give secure, governed access to LLM capabilities Developing Python-based GenAI components including prompt orchestration … CI/CD pipelines using Azure DevOps Working closely with platform leads, architects, and SRE teams to ensure stable, scalable operations Supporting benchmarking, evaluation, and experiment tracking to measure LLM performance and cost Contributing to RAG implementations and vector-driven retrieval patterns Helping shape platform patterns, reusable components, and clear documentation Troubleshooting performance issues across distributed systems and cloud services … What You’ll Bring: 5+ years of backend engineering experience, with strong Python at the core Hands-on exposure to GenAI technologies and Large Language Models Practical understanding of LLM evaluation, prompt handling, and operational complexities A DevOps-first approach with experience in CI/CD, observability, and automation (Azure DevOps preferred) Confidence working in regulated enterprise environments with tight More ❯

Role/Job Title: Prompt Engineer Work Location: London 250 Bishopsgate (on site) The Role A Prompt Engineer in the Data and Analytics domain within banking plays a crucial role in leveraging Generative AI (GenAI) and Large Language Models (LLMs More ❯

Role: AI Developer Location: London Duration: 5 Months Day rate: £540 - £585 Umbrella Only Minimum of 5 years UK residency required Role Description: We're looking for an experience AI developer with the skills below. They'll be building out More ❯

**Senior Python Developer** (Contract) Duration: 3 Months (Possibility for extension) Location: Remote (Occasional travel to London as and when required) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Profile We are seeking a highly skilled More ❯

Title: Data Scientist - AI Client: Home Office Rate: Up to £520 Contract: Inside IR35 Clearance: Active SC Clearance required (minimum 5 years' UK residency) We're seeking a skilled Data Scientist with AI experience to join a high-profile rogramme More ❯

Title: Data Scientist - AI Client: Home Office Rate: Up to £520 Contract: Inside IR35 Clearance: Active SC Clearance required (minimum 5 years' UK residency) We're seeking a skilled Data Scientist with AI experience to join a high-profile rogramme More ❯

Python Engineer £750 - £800 per day 2 days onsite We're working with a global healthcare and AI research organisation that's pioneering the use of advanced Machine Learning to accelerate the discovery and delivery of life-changing treatments. Their More ❯

Backend Software Engineer (AI) £750 - £800 per day 2 days onsite We're working with a global healthcare and AI research organisation that's pioneering the use of advanced Machine Learning to accelerate the discovery and delivery of life-changing More ❯

Data Business Analyst - MetaData, Cloud, Healthcare £Market Rate - Inside IR35 London/Hybrid - 2 days per week on site 3-6 months My client is an instantly recognisable Healthcare Insurer who urgently require a Data Business Analyst to join a More ❯

Job Title: Lead Data Engineer Location: London (Hybrid) Contract: 6 Months (Potential Extension) Start Date: ASAP About the Client Our client is transforming their industry by replacing cigarettes with innovative, smoke-free alternatives. They are leveraging technology, data, and AI More ❯

robust, reliable, and user-focused AI services across our business. What You'll Do Design and implement a comprehensive AI testing and evaluation framework for all AI solutions, including LLM-based tools, RAG systems, and third-party platforms. Define and document quality standards for semantic accuracy, factual consistency, bias, tone, and relevance. Develop reusable testing templates, data sets, and evaluation … practices to ensure fairness, transparency, and user trust. What You'll Bring Strong hands-on experience in testing and evaluation of AI or software systems, ideally with NLP or LLM-based applications. Understanding of prompt evaluation, semantic search, and LLM behaviour (accuracy, hallucination, bias, tone, etc.). Familiarity with tools like Trulens, HumanLoop, PromptLayer, or similar; experience designing QA approaches More ❯

expectations. Technical Delivery: Design, implement, and document end-to-end data and GenAI solutions using open-source and cloud-based components. Develop and maintain data pipelines, vector databases, and LLM integrations. Configure and optimize solutions on Microsoft Azure Cloud. Ensure adherence to best practices in architecture, security, and scalability. Documentation: Produce clear, high-quality documentation of system designs, configurations, and … with a collaborative, mentoring mindset. Hands-on experience with open-source technologies across front-end and back-end systems. Proficiency in data pipelines, vector stores, and Generative AI/LLM implementations. Working knowledge of Microsoft Azure Cloud services, including configuration and deployment. Strong documentation and reporting skills. Desirable Current DV Clearance (Developed Vetting) or willingness to undergo DV clearance process. More ❯

I am working with a consultancy feeding into the public sector, looking for multiple ML Engineers. Inside IR35 £400 - £500 per day (depending on experience level) Remote (occasional London travel) Proven experience building and deploying machine learning models in a More ❯

I am working with a consultancy feeding into the public sector, looking for multiple ML Engineers.Inside IR35£400 - £500 per day (depending on experience level)Remote (occasional London travel) Proven experience building and deploying machine learning models in a production More ❯

Job Title: Senior Python Backend Engineer (Generative AI) Location: London - Hybrid 2x Per Week Role Type: Contract, £650-800 Per Day, Inside IR35 The Role We are seeking an experienced Senior Python Backend Engineer to build, scale, and maintain the More ❯

Cegeka UK are seeking a DV cleared Application Developer with expertise in Python, PyTorch, Data Handling, Large Language Model (LLM), GitHub, Linux CLI, Docker and Kubernetes. Any additional knowledge of Artificial Intelligence (AI), Machine Learning (ML) and Natural Language Processing (NLP) is highly desirable. Working on behalf of our UK Central Government client you will be part of a brand More ❯